i guess all i can say in response is that "yes!" i would suggest policy changes were in order. my colorblind example was not to not teach people who were colorblind that colors exist, but that teaching them using standard practices might not be as good as some tailored instruction. currently we teach kids with pictures of brightly colored objects that make the item stand out in the child's mind, and therefore be more readily associated with the spelling of the word. maybe (if we know that all people in a certain town are colorblind) it means that instead of "tommy held a red balloon" we teach "tommy had a giant balloon" and the associated illustration is tailored to the abilities of the kids. or, it could be as simple as they can't tell the difference between red and green and consequently we utilize other colors in teaching.

point being, if we don't think there are analogous opportunities in educating people in Africa about diseases, about social equality and about development of infrastructure then we just aren't thinking hard enough. i would hate for America (specifically) to continue to be the hammer that thinks everything looks like a nail.